At some point don't we need to accept the laws of physics and biology? That is, The VisionPro covers a significant part of your face, much more than a pair of glasses. Face-ID already has the challenge of needing to recognize you in tons of different conditions (lighting, pale/tan skin color, wildly different hairstyles, facial hair, etc.), while for security reasons nearly never letting someone else impersonate you. Is it really possible to get that level of forgiveness with accuracy if Face-ID only gets to consider the bottom half of your face?